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Finding the Fourth Proportional to 101,281.14, 139,756.05 and 55,956.42

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Solution

The fourth proportional to 101,281.14, 139,756.05 and 55,956.42 is: 77,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,281.14 : 139,756.05 = 55,956.42 : x
  2. Step 2: Convert to fraction form
    101,281.14/139,756.05 = 55,956.42/x
  3. Step 3: Cross multiply
    101,281.14x = 139,756.05 × 55,956.42
  4. Step 4: Simplify right side
    101,281.14x = 7,820,248,231.34
  5. Step 5: Solve for x
    x = 7,820,248,231.34/101,281.14
  6. Step 6: Final answer
    x = 77,213.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.